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Refrigerated Compressed Air Dryers
Refrigerated compressed air dryers operate by cooling an air stream to 38 degrees Fahrenheit to condense the water vapor in the airflow. The air dryers cool the air to 38 degrees to avoid the freezing of water vapor. Freezing vapor can block the condensate from draining effectively, or due to the expanding nature of water as it freezes, the freezing vapor could potentially crack the heat exchanger connected to the system. In either case, the effectiveness of the refrigerated compressed air dryer will be heavily restricted.
Refrigerated compressed air dryers are typically connected to two separate heat exchangers. One heat exchanger for air-to-air refrigeration and one for air-to-refrigeration heat transfers. These two heat exchangers are utilized to cool the hot incoming air with cold outgoing air while preventing re-condensation by increasing the temperature of outgoing air.
